Tourmaline (hollow), Lepidolite – Pederneira Mine, Minas Gerias, Brazil
 Tourmaline with a partially etched cavity along its longitudinal axis, filled with lepidolite. A special growth form that is rarely found in such a pronounced form.
 The tourmaline has an intense bottle green color and is covered with smaller crystals on the surface.
 A very interesting collector's item with intense shine.